it takes a snail to move between two points. A ramp was made, covered with a pie and placed on a table at a 25-degree angle. Two lines, 15 centimeters apart, wer the glass. A snail was placed on the upper line, and a stopwatch was used to m amount of time it took the snail to move to the lower line. The results were recorde table. The investigation was repeated using sandpaper and cardboard on the sur ramp. What must be done to show that the results of this investigation are valid? The ramp must be replaced with a log found in the habitat of the snail. The angle of the ramp must be increased to 35 degrees. The investigation must be repeated several times. The times in the data table must be averaged.
it takes a snail to move between two points. A ramp was made, covered with a pie and placed on a table at a 25-degree angle. Two lines, 15 centimeters apart, wer the glass. A snail was placed on the upper line, and a stopwatch was used to m amount of time it took the snail to move to the lower line. The results were recorde table. The investigation was repeated using sandpaper and cardboard on the sur ramp. What must be done to show that the results of this investigation are valid? The ramp must be replaced with a log found in the habitat of the snail. The angle of the ramp must be increased to 35 degrees. The investigation must be repeated several times. The times in the data table must be averaged.
Chapter11: Environmental Safety
Section: Chapter Questions
Problem 2AE
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Transcribed Image Text:An investigation was set up to determine the effect of various surfaces on the amount of time
it takes a snail to move between two points. A ramp was made, covered with a piece of glass,
and placed on a table at a 25-degree angle. Two lines, 15 centimeters apart, were drawn on
the glass. A snail was placed on the upper line, and a stopwatch was used to measure the
2)
amount of time it took the snail to move to the lower line. The results were recorded in a data
table. The investigation was repeated using sandpaper and cardboard on the surface of the
ramp.
What must be done to show that the results of this investigation are valid?
A)
The ramp must be replaced with a log found in the habitat of the snail.
B)
The angle of the ramp must be increased to 35 degrees.
C)
The investigation must be repeated several times.
D)
The times in the data table must be averaged.
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